Home / 1,314,413.20-1,971,619.80-842,021.20

Finding the Fourth Proportional to 1,314,413.20, 1,971,619.80 and 842,021.20

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Solution

The fourth proportional to 1,314,413.20, 1,971,619.80 and 842,021.20 is: 1,263,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314,413.20 : 1,971,619.80 = 842,021.20 : x
  2. Step 2: Convert to fraction form
    1,314,413.20/1,971,619.80 = 842,021.20/x
  3. Step 3: Cross multiply
    1,314,413.20x = 1,971,619.80 × 842,021.20
  4. Step 4: Simplify right side
    1,314,413.20x = 1,660,145,669,939.76
  5. Step 5: Solve for x
    x = 1,660,145,669,939.76/1,314,413.20
  6. Step 6: Final answer
    x = 1,263,031.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.